A four-digit code leaves three traces: a sum, a multiple, and what happens when you read it backwards. Three conditions for a single number.
The code with checksum and reverse
Riddle statement
A code has four different figures.
It is known that:
- is a multiple of 9;
- the last figure is the remainder by dividing the sum of the first three by 10;
- By reversing the order of its figures, the number obtained exceeds the original by 369 units.
What is the code?